668059340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2569459}}^1$

素因数の和:2569481

約数の個数: 24

約数和(自身を含む): 1510842480

約数和(自身を除く): 842783140

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 2569459, 5138918, 10277836, 12847295, 25694590, 33402967, 51389180, 66805934, 133611868, 167014835, 334029670, 668059340]

約数ペア:

[(1, 668059340), (2, 334029670), (4, 167014835), (5, 133611868), (10, 66805934), (13, 51389180), (20, 33402967), (26, 25694590), (52, 12847295), (65, 10277836), (130, 5138918), (260, 2569459)]